weiny



(No Model.)

NCL/179,178.

2 Sl1eets-4Sheet l. R. 1-1. WEINY.

TBLEGRAPHIG REPBATER.

Patented Ju1y19,1892.

Eastlz'ne (No Model.) 2 Sheets-Sheet 2. R. H. WEINY.

TELBGRAPHIG RBPEATBR. No. 479,178. Patented July 19, 1892.

IINrTnn STaTns PATENT @Tricia RODERICK II. IVEINY, OF NEV YORK, N. Y.

TELEGRAPHIC REPEATER.

SPECIFICATION forming part of Letters 'Patent No. 479,178, dated July 19, 1892.

Application filed February 8, 1892. Serial No. 420,710. (No model.)

To LZZ whom, it may concern.-

Beit known that I, RODERICK Il. WnrNY, a citizen of the United States, residing` in the city, county, and State of New York, have invented certain new and useful Improvements in Telegraphic Repeaters, of which the following` is a specification.

My invention relates to the repeating or translating apparatus which is employed in electric telegraphy for automatically transferring or translating telegraphic signals in either direction from one to the other of two normally-closed circuits.

Myimprovement comprises a differentiallywound auxiliary local electro-magnet which is arranged to act upon the armature-lever which normallycon trols the breaking and closing of the dependent circuit; and it further comprises certain improvements in the construction of said auxiliary electromagnet, whereby it is better adapted to the conditions under which it is required to be used.

In the accompanying drawings, Figure l is a diagram illustrating the general organization of my apparatus. Fig. 2 is a side elevation of my improved relay, and Figs. 3 and -iL are detached views of portions of the same.

The relay or receiving-magnet (shown in Figs. 2, 3, and 4) constitutes an important part of my apparatus.` It may be constructed in any of the forms in ordinary use, comprising an electro-magnet M, an armature a, and a retracting-spring r. In addition to the usual electro-magnet M, I make use of an auxiliary electro-magnet I., which I prefer to construct in such a manner that it may be mounted above and partly betweenthe helices of the main magnet and may be made to act upon the saine armature. In order to more conveniently effect this result, I construct this auxiliary electro magnet with concentric poles, as best seen in the sectional view, Fig. 3, in which it will be seen that one pole n n completely surrounds the other pole s, being constructed in the form of a hollow shell or cylinder, the closed end of which cylinder forms the yoke y, by which the shell is magnetically united with the central pole. The magnetiZing-coil is wound between the central and the exterior portions of the iron core, and consists of two equal helices or coils Z and Z2, which when properly connected with reference to each other, as hereinafter cxplained, constitute a differential or neutraliz` ing magnet. The upper portion of the armature a, as shown in Fig. e, is of disk-like form, thus covering both the internal and the extern al pole of the auxiliary electro-magnet I3.

In the complete apparatus as arranged for operation and shown in Fig. l, K is the key, M the relaymagnet, and S the repeatingsounder of the western main line, and in like manner K is the key, M the relay-magnet, and S the repeating-sounder of the eastern mainline. The main and local batteries of the apparatus are arranged precisely in the ordinary manner and to avoid multiplicity of lines have been omitted from the diagram. It is only necessary to observe that when the armature a is drawn forward the local circuit of the sounder S is closed, and so of the armature a and sounder S.

The differential electro-magnet L is actuated by an auxiliary local battery I5', the circuit of which may be traced as follows: from battery B by wire I to switch Q', and, when switch is closed, to point 2, where the current divides, one portion going through the breaking-point 3 of repeating-sounder S and thence by wire 4. through differential coil Z2 to point 6, and the other portion through wire 5 and differential coil Z to the same point 6 and thence by the common return-wire 7 to the other pole of the battery B. The connections of the other auxiliary battery B are made in precisely the same way through switch Q., sounder S, and differential coils Z3 and Z4. The action of these differential coils being normally equal and opposite, no magnetism can. be manifested in the auxiliary electro-magnet L unless one of the differential circuits is broken at the breaking-point 3 of sounder S, and so of electro-magnet L in relation to the breaking-point of sounder S.

The operation is as follows: If the operator of the west line opens the key K', the armature a falls off, as seen in the gure, opening the sounder S. This sounder has two breaking-points, one in the auxiliary local line at 3 and the other upon the insulated spring t in the eastern main line, which latter does not separate from the stop w until after the break has been made at 3. Hence the differential magnet Il is brought into action and attracts IOO the armature a before the main circuit can be broken at t', so as to cause said armature to be released by the electro-magnet M, and thus the sounder S is prevented from breaking back into the east line. vWhen the key at K is again closed, the reverse action takes place, the circuit through the equating-coil of the differential magnet L not being restored, so as to release the armature a, until after the main line has been closed. A similar operation takes place when signals are transmitted from the key K and repeated into the West line. By turning the switches Q and Q the auxiliary locals may be disconnected and the breaking-points w and if and w and t cutout when the two lines are to be operated independently.

By making use of a differential magnet which is brought into action by the breaking instead of the closing of the auxiliary circuit I am enabled to materiallyincrease the maximum rapidity of signaling, and this effect is aided by the peculiar form of the auxiliary magnet and the concentration of its poles in the manner set forth.

I claim as my inventionl. In a telegraphic repeater, the combination, with the armature of the main receivingmagnet, of an independentauxiliary differential magnet, one Winding of which is included in a circuit controlled by the armature of the opposite receiving-magnet, substantially as set forth.

2. In a telegraphic repeater, the combination, with the armature of the main receivingmagnet, of an independent differential electro-magnet, a local battery, and a breakingpoint included in the circuit of one winding of said differential magnet, which is brought into action before -the circuit of the main magnet is broken, substantially as set forth.

3. In a telegrapliio repeater, the combination, with the armature-lever of each repeatingsounder, of two independent contactpoints, one of which breaks the circuit of the auxiliary magnet of the opposite relay before the other breaks the main circuit of said relay, substantially as set forth.

In testimony whereof I have hereunto subscribed niy naine this 5th day of February, A. D. 1802.

RODERICK I-I. WEINY.

Witnesses:

ANTHONY GREF, FRANKLIN LEONARD Porn. 

